As stated in the newly published App Store Editors' Notes for the game:

Each week, we select a great app and bring it to you, for free, as our App of the Week. (In-App Purchases sold separately.) Icycle delightfully infuses dire circumstances with goofy humor as you pedal and tumble through treacherous landscapes. The timing challenges and inventive stages are terrific, and excellent sound and visuals make this game an unforgettable experience.

As explained in our largely positive original review of the game, Icycle is a puzzling platformer that has you helping a dazed and confused dude survive a “post-apocalyptic frozen wonderland” by riding a tiny bicycle in the nude. Brrr!